A president or a prime minister?
The nutshell
The UK does not have a president. Instead, a King is the head of state and a Prime Minister is the head of government. The Prime Minister runs the country from day to day, and voters do not pick the Prime Minister directly.
Every fact on this page comes from official guides to how the UK is run and non-partisan explainers. Each source tag — like Parl — opens where a fact comes from.
The basics
Head of state and head of government
Many countries give the top job to one person, called a president. A president is often both the head of state and the head of government. The head of state stands for the whole country. The head of government runs the country from day to day. In the UK, these two roles are split between two different people.
What the King does
The UK's head of state is the King. UK Parliament describes the Sovereign as the head of state, while the power to make and pass laws sits with an elected Parliament.Parl The King's role today is mostly ceremonial. One of the King's main jobs is to appoint the Prime Minister.
What the Prime Minister does
The UK's head of government is the Prime Minister. GOV.UK describes the Prime Minister as the leader of the UK government.GOV GOV.UK also explains that Parliament, which makes the laws, is separate from the government, which runs the country and puts laws into action.GOV
Why there is no single vote for Prime Minister
At a general election, each voter picks one local MP, not the Prime Minister. The House of Commons Library records that a Prime Minister is not elected directly by voters. The job goes to the leader of the party that can command the confidence of the House of Commons.HoC The monarch then appoints that party leader as Prime Minister.IfG
- A Prime Minister who loses the confidence of MPs can be replaced without waiting for a fixed term to end
- The Prime Minister sits in Parliament and answers questions from MPs in public each week
- A separate head of state who stays out of party politics gives the country one neutral figure to represent it
- Voters cannot choose the Prime Minister in a single national vote, so the leader can change between elections
- A directly-elected president would hold a mandate from the whole country, not just one local area
- A head of state chosen by voters would be picked by the public rather than inherit the role
The deep end6 min
Two roles, one person or two
Every country needs a way to stand for the nation and a way to run it. The first role is the head of state. The second is the head of government. In a presidential system, such as the United States, one elected president holds both roles at once. In the UK's parliamentary system, the roles are split. The King is the head of state, and the Prime Minister is the head of government.
How the UK head of state works
UK Parliament describes the Sovereign as the head of state and part of Parliament, alongside the House of Commons and the House of Lords. The power to make and pass laws rests with an elected Parliament, not the Crown.Parl Among the King's main duties as head of state are appointing the Prime Minister, opening new sessions of Parliament, and giving royal assent to bills, the final step before a bill becomes law. The role is mostly ceremonial.
How a Prime Minister is chosen
The Prime Minister is not chosen in a separate national vote. The House of Commons Library records that a Prime Minister is not directly elected. The job goes to the leader of the party that can command the confidence of the House of Commons, meaning the support of a majority of MPs.HoC The Institute for Government explains that the monarch appoints as Prime Minister the person best placed to command that confidence.IfG A Prime Minister stays in office only while that confidence lasts, and can be replaced without a general election.
The debate about presidents and prime ministers
Whether the UK should keep this system is a contested question. Supporters of the parliamentary model argue that a Prime Minister who sits inside Parliament can be questioned by MPs and removed quickly if confidence is lost, without waiting for a fixed term to end. Supporters also point to the value of a head of state who stays out of party politics.
Those who favour a more presidential system argue that a leader chosen directly by voters would hold a clearer mandate from the whole country, and that a head of state chosen by the public would answer to voters rather than inherit the role. Both positions describe trade-offs rather than settled facts, and the UK has kept its parliamentary system to date.